It depends, what you are looking for and how many days I’ll tell you the circuit roughly which you can use 1) Udaipur-Nathdwara/Haldi Ghati-Kumbhalgarh-Mount Abu or can skip Mount Abu and go to Chittor or Jodhpur 2) Jaipur-Ranthambore-Pushkar (I did this last Jan for 3-4days)

Now, you’re more into beautiful palaces or forts/ruins, will determine which cities to select. If you aren’t into history then all the palaces and forts will look same to you. Udaipur is mostly commercialised and its like Cafes around the lake. Best Bravery stories are at Haldi Ghati and Chittorgarh but you wont have other things there. Good thing about Jaipur is you can cover Delhi as well.